根据括号内的要求完成下列句子。

1. It's cloudy today. (对划线部分提问)

    ______ is the weather             today?

2. I went to bed after I finished my homework last night. (同义句)

    I ______ go to bed ______ I finished my homework last night.

3. He is too young to go to school. (同义句)

    He isn't ______ ______ to go to school.

4. I have already finished the work. (用in 10 minutes 改写)

    I ______ ______ the work in 10 minutes.

5. He lit the birthday candles happily, _____ _____? (变反意疑问句)